dagger fern
— Noun
– English
～ North American evergreen fern having pinnate leaves and dense clusters of lance-shaped fronds
dengue fever
— Noun
– English
～ an infectious disease of the tropics transmitted by mosquitoes and characterized by rash and aching head and joints
dumdum fever
— Noun
– English
～ leishmaniasis of the viscera
dandy fever
— Noun
– English
～ an infectious disease of the tropics transmitted by mosquitoes and characterized by rash and aching head and joints
devil's fig
— Noun
– English
～ any plant of the genus Argemone having large white or yellow flowers and prickly leaves and stems and pods; chiefly of tropical America
detail file
— Noun
– English
～ (computer science) a computer file containing relatively transient data about a particular data processing task
data file
— Noun
– English
～ a set of related records (either written or electronic) kept together
disk file
— Noun
– English
～ (computer science) a computer file stored on a magnetic disk and identified by a unique label
Dwight Filley Davis
— Noun
– English
～ United States tennis player who donated the Davis Cup for international team tennis competition (1879-1945)
documentary film
— Noun
– English
～ a film or TV program presenting the facts about a person or event
dorsal fin
— Noun
– English
～ unpaired median fin on the backs of fishes and some other aquatic vertebrates that help to maintain balance
depth finder
— Noun
– English
～ navigational instrument used to measure the depth of a body of water (as by ultrasound or radar)
direction finder
— Noun
– English
～ radio; determines the direction of incoming radio waves
DNA fingerprint
— Noun
– English
～ biometric identification obtained by examining a person's unique sequence of DNA base pairs; often used for evidence in criminal law cases
douglas fir
— Noun
– English
～ tall evergreen timber tree of western North America having resinous wood and short needles
douglas fir
— Noun
– English
～ strong durable timber of a douglas fir
destruction fire
— Noun
– English
～ fire delivered for the sole purpose of destroying material objects
distributed fire
— Noun
– English
～ fire dispersed so as to engage effectively an area target
direct fire
— Noun
– English
～ fire delivered on a target that is visible to the person aiming it
double first
— Noun
– English
～ a first-class honours degree in two subjects